Brake-head and securing-key for brake-shoes.



H. JONES.

BRAKE HEAD AND SECURING KEY FOR BRAKE SHOES.

w y n 7 19 APPLIbAT .v ,19 1,068,664. Patented July 29,1913,

F I Im:

IWA v Vst Inventor:

by MM-1 "UNITE STATES PATENT oFFioE.

HARRY JONES, OF SUFFERN, NEW .YOR-KJ ASSIGNOR, BY MESNE ASSIGNMENTS, T0 AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF MAHWAH, NEW JERSEY. A

CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented July 29, 1913.

Application tiled October 7, 1912. Serial No. 724,258.

Tol all coli-om it may concern Beit known that Ik, HARRY Joxns, i citizen of theUnited States, and a resident of Sufl'ern, in the county of Rockland and State of New York, have made and invented certain new and useful Improvements in Brake- Heads and Securing-Keys for Brake-Shoes, of which the following is a specification.

My invention relates to brake heads for supporting brake shoes in position adjacent the wheels of locomotives, curs, or other railway vehicles; and to securing keys by means of which the shoes are secured to the heads; and the object thereof is to provide si brake head and securing key designed to permit the use therewith of a brake shoe having an attachingl lug (by meiins of which the shoe is secured to the brake head by means of a key :is will be understood) of minimum height, or to permit the use of an attaching lug of much less height than the lug with which Abrake shoes are at present commonly provided.

In replacing a worn brakeslioe with a new one in accordance with the practice und con struction of shoe at presentv obtaining, the

brake head must be moved away fromthe periphery of .the wheel a distance suilicient to permitthe new shoe to be placed in position between the head andthe wheel, which distance is obviously at least equal to the thickness of the new shoe plus the height.

of the projecting attaching lug of the shoe. from which it follows that any scheme whereby the .use of an attaching lug of less height Vmay be employed reduces the distance l that the head must be moved away from the tread surface of the wheel; which n feaof shoes operating upon the driving wheels of locomotives, as in such cases the permissible nio-vement ofthe head away from the periphery of the wheel .is often extremely limited in amount.

In view of the premises, l.ind with the obyects above referred to and such other ob.-

jects aswill hereinafter appear in view, my invention `consists in the improved brake head and securing key for attaching a brake shoe `thereto and holding it in place, illustrated in the accompanying' drawing vand q aimed, and in 'l such variations andinodifcatioim thereof as hereinafter described and c will be obvious to those skilled in' the art to which my invention relates.

In the drawing wherein the preferred einbodiment of my invention is illustrated: Figure l is a view showing' my improved brake head and securing key foi' brake shoes, in connection with a brake shoe, in side elevation, portions being broken away to show features of inter-nul construction; Fig'. 2 is u view sho ing a section upon a curved surface indicated by the line 2\-2, Fig. l, looking up, certain parts being broken away to illustrate features of construction otherwise hidden; Fig. 3 is a view showing a Section upon a transverse plane indicated by the lino l-l, Fig. l, looking in the direction indicated by the arrows; Fig. 4 is a View similar to Fig. 2 but.' showing a slightly' modilied form of my invention; and, Figs. 5 and 6 are fragmentary views illustrating two other of the various modifications thereof.

In the accompanying drawing wherein .the

preferred embodiment of my invention is illustrated, the reference character 7 designates a broke shoe of usual or common form and the rear portion or back of which provided with one or more attaching lugs S byineans of which the same may be secured to and supported from the brake head 9 by.

`is of the type commonly designated us a flanged shoe, although it will be understood that the particular type of brake shoe referred to is in no way involved in my invention, and that the saine is capable vof use ,with all forms or types of shoe.

The brake head is provided` with a portion or surface adapted to cornet with the rear surface or back of the ialie shoe to .thereby sup ort the same, .vill be understood, and

is s ,own as made up of two side flanges 1l and L bottom ortion or plate 12"connect ing said side kenigges to thereby proyide a large area of `contact between the head and the beck of the shoe, although the of Seid area .of contact is of secondary impor tance and variesfwitliin n ide'liniits in' different types of shoe and heafhand in accordance with various practices obtaining among 'the' users of brake shoes; The bottom or plate l2 is 'provided with one or more' openings 13,1tl1e number. obviously being 'depend- 'ent upon thenumb'er of attaching lugs `With l which the brake shoe to be usedis provided,

I i 'i erence to themain body portion ofthe key drawing.

into or through which the attaching lugs 8 .of theshoe. extend, as villustrated .in the The reference Character* 14 `designates lse euring' `key carried by the brake' head and by `means.offvvhieh the brake shoe is held. in placel thereupon -andwhich keyv .is pro:

vided with A lug engaging'portions .01'. elements 15,"which elementsare oifset .with refor, as otherx'viseexp`resse'd1-said .lug engaging elements are located beneath or beloyv th'e main body portion" of.the key. kThese terms'ofdirection,.however are used for-.the Qpnrposes of conyen-lenceandm connection- -Withthe accompanylng drawing,1 and are intended to include constrctionsof. the ,sel

mentftherof is" located between' the -key A l. proper, or body portionyand thebra'ke shoe z so astothereby bring the element of the key immediate-vicinity of, the rear portion of the whichengag'es the lug of the-shoe into the i Ashoeto. therbype'nnit-the nseof a comparatively sliorta'ttaohing lug:

"The-key`1`4 is located between the tlanges l 35j. 's'hoivn as resting upon the innerlsurface of llffofj. the brakehead illustrated and is i jthejonnecting-plateorbottom 1Q. 7The lug ol a shoe i-s` secured in' position upon the head;

'engaging elements 15 of the key extend into 'the openings" 18and into the opening of .4

the' k'ey. lugs, asbest shown in Fig. 3, when I' fs'aidopeningsbeing shoyvnas provided with `.extensions;loftyithin' which the` elements `15'ii'iay'-fl1e, thereby perlnttingthe brake shoe to be lockedlin position, or detached,

Will beunderstoodffrom Fig. 1.

d YThe keye 14 nis preferably l,permanently retained 'within the brake, head as by means of. guides 17 and an .eiitending portion 18 l which passes through an opening provided in a .Wall 19 at oneend 'ofthe head, Whichcextending portion is provided with a hole ein :elements 'iuniingthus hel-dl 'out of the openings 13 and'out ot-i'he iva-y of the-attaching lug i of theshoej. The lu'g engaging as formed by narrowing the vend ofthe key.

adjacent the body' ofthe key -,-a nd bycutting elements. are shown'.

70l 14 andbendingthe .narrowed portion over a-porti'on of the keyjct're Aalong tlnefs'ides' i and' depressing the portion-thus cnt.f1ee,.

-\\rought iron or 'mild steei plate. It. tiesirable that the free endsjof these elements be .supported by. the brake' headfzvvheng'a .sho'e- .the -keybeingl commonly inside -from a is secured in placethereupori as a strongerI Aend the 'ends vof 'said ,elements are rabbeted, E' as shown 1n Fig.' 1, and-I engage a ledge 22 .fornied'in the bottom' 12E of .the'head.. ii the form shoivn inFig .5, the lfree end of'-` the tg :engaging element 23 istinclined, and engages a similar inclined surface'qof the' bottonig'while iii the 'form shown in Fig.

6 no end support.is'provided for the ele by a new one, than would he the case if the attaching lug of the shoe iras of such a length -as to extend through the bottom 12 a distance sufficientto receive a securing key resting upon the inner surface of the bottom, as is usually the case; and that if thc head be moved away from the Wheel a distance suiiicient merely to clear the end lugs 10 of a shoe, the same may be placed upon the tread of the Wheel and brought into' position by movement in the direction of its length, as the length of the projecting lug of the shoe does not exceed the height of the. lugs 10. Also,land because of thel fact that in my device the extent of movement of the securing key longitudinally of the brake head necessary to release a brake shoe. or to secure it to the head after it has been placed in proper position, is merely such as will move the lug engaging elements of the key ont of or into the opening in the attaching lug of the shoe, it follows that my my device may be used in positions Where there is not sutiicient room (because of the end of the key coming into contact with some other member) to withdraw the ordinary key entirely from the attaching lng of the shoe, as by moving it a ydistance equal to at least onehalf its length, as is neces` sary with the forms of securing key 1n ordinary use for securing the shoe to the black ol a shoe when the -anie is aecrrcii head. Thisv t'eature is; of particular impor tance in case a'brake shoe having two or more attaching lugs is used, as." in such a case and when the usual single key ot a length corresponding approximately with the length of the brake head and passing through-all theI lugs of the shoe is employed. tht` key has to be moved a distance corresponding` approximately with its length in orderto release the shoe from the head. Finally. the securing key in the preferred form of my device being located within the brake head and permanently secured in place therein. it will not become displaced or separated from the head during the operation of removing ay worn shoe and substituting an unworn shoe therefor: and. the securing key being operable from the end ot' the brake head. it is not necessary to work within the limited space within the head in removing or replacing a shoe. which is a feature of especial importance in cases where a shoe having two or more attaching lugs and a corresponding number of separate securingkeys are used, as is at present coinmonly the case.

I have illustrated my device as used to secure a brake shoe in place having an attaching lug embedded in the-body of the shoe. It will be understood. however. that the ehoe shown is used Simply to illustrate the use of my device. and that the same may be used to secure brake shoes having any kind cf attaching lug whatever in place. among which forms may be mentioned shoes having a steel back embedded in the rear tace of the shoe and having' an attaching lug formed either integrally therewith. orA

fol-'ned separately and suitably secured to the back: shoes having a cast metal lug rein forced or not by wrought metal as mav be preterm-tl: and shoes having an attachingr embed-.led in their body as illustrated in the drawing.

Having thus described and explained my i iovenion, l claim and desire to .@:ewure bjr Letters laten l. 'lie c mihination with a brake he having :i surface adapted to contact wie la the Alb,

L. 'VinA ccnibiuaiicn with a orale mail having a portaal ahhh comet 1th the til tin` head; of a securing key earriel l.v ,will head and nimalrle in a direction substair tiall)Y inirallelvfiti the hack ol' the shoe. :said lieux having a lng engaging element located beneath the mam body of the key and which lug engaging element is adapted to engage the attaching lug of a brake shoe and serve as a` support therefor, when the shoe is set ured in position upon the head.

Il. fl`he combination with a brake head having a portion which contacts with the back oi' a shoe when the same is secured to the head: ot' a securing key carried by said head and movablein a direction substantially parallel with the back of the shoe. said l-;e v having a lug engaging element located ietween the main body of the key and the back of a shoe when the same is secured to Said head.'and which lug engaging element is adapted to engage theiattaching lug of the shoe and serve a upport therefor.

when the shoe secured in position upon the head.

it. The combination with a brake head having two side flanges and a bottom port ion connecting said flanges` and adapted to con tact with the back of a brake shoe. and which bottom portion is provided with an opening into which the attaching lug ot' a brake shoe may extend: of a securing ke) located between Said side tlanges4 and pro vided with a lug engaging elementl extending into the opening aforesaid and adapted to engage the attaching lug el' a brake shoe.

5. The combination with a brake head having two side flanges and a bottom porticn connecting said langefs and adapted to ccntact with the back of a brake shoe. and which bottom portion is provided with an opt-ning into which the attachinglug of a brake shoe may extend; of a securing key* located between said side llanges and provided with a lug engaging element located within the opening a t'ir-iesaid and movable into and outr of engagement with the attaching lug of a brake shoe.

ti. The combination with a brake head having two side flanges and a` bottom portion connecting said franges and adapted to contact with the back of a brake shoe. and lich bottoni portion is provided with an 1 @peiling into which the attaching lug of a eine miv extcnf'l. of a securing liev i fied beter-in said side flanges and rest or. @aid bottom portion and movable iooginiliually of said head. and which key if prwiderl 'with aV lug engaging element l culti the opening aforesaid and to ergage the attaching lug of a nilo shire? and means for retaining said.

in place and for guiding it 1n its move- `inflile.

vet)

i 'lca'ted 'between said side'gflanges' and resting upon said bottom portion and movable 1on1 i gitudinally of said,-head,.and which Vkey is provided with a lug 'engaging element 1ocated within the opening' aforesaid and [adapted to-eng.,1fagel the attachinglug of a.

brake shoe; and means forholding said key in either-'of its extreme positions.-

8.. A securing k'ey for brake shoes having a 'main 4body portion Curved,to.correspond .approximately with.' the curvature. of a brake sli oe,`and a lugengaging elementlou' xingkey'carried by'said head and movable' longitudin-allythereof, and having a lug-enl cated beneath the.l concave surface of said body' portionand adapted to 'engage the attaching lugxof abrake' shoe.- g

9..The,l combination withY a brake head adapted 'to support a brake shoe; of aseeur'- gagi'ng element offset toward thebackof a shoe supported by said head andiadaptedto engage the attaching lug of the brake shoe. 10. The combination with a brake head adapted to support a brake shoegof a .secnr-` ing key carried bysaidjhead and movable lmigitudinall y thereof, saidkeycomprising a main body portion, and a lug engaging element located beneath said .body portion and adapted to engage the attachingr lugof a brake shoe.

11. The combination with a brake head adapted to support a brake shoe; Aof a securing keycarriedby said head' and movable longitudinally thereof, and having a lug en gaging element offset toward the back of a shoe supported bv said head and adapted to v on. means for preventing the detachment ofA said sliding key from said head, and means tor holding said key against movement on lsaid plate, substantially as described.

14. The combination with a brake head and a key permanently afiixed thereto, said key extending and movable longitudinally of said head, substantially as described 15. The combination with a brake head provided with a plate curved in the direction-of its length and adapted to' bear on and against the key -curved in the direction of its length and longitudinally on said side fianges and provided with lugs fit' from said plate,

provided with a plate adapted' back of a brake shoe. of a..

extending and 4sliding longitudinally on said l curved plate, detachment of said key stantially as described y 16. The combination with a brake head constructed with a plate adapted to bear on and against the back of a brake shoe, a' key permanently. attached tosai'd plate and extending and moving longitudinally thereon, lugsprovidedon the under sidegof said slidfrom said plate, suband means Afor 'preventing the lng keyandextending into openings formed in.said plateof the brake head, and means for locking thekey against .movement onl said' plate, substantially as descrlbed.

adapted to bear on andagainst the back 'of a brake shoe, and witlrside tlangesext'ending Qutwardly from lsaid plate, in combination with a sliding key resting on said plate and .movable longitudinally thereon and between said side flanges, and means yfor preventing the detachment of said key from saidplate.

.18. The combination with a brake head formed with a bottom plate ada )ted -to beai` o'n and against the back of a bra e shoe, and. provided with openings therein, said head being formed with side flanges extending outwardly from. said plate, of a. key sliding 1said plate and between ting in the openings in said plate, means for preventing said key from becoming detached and means for holding said key against movement on said plate, substantially as described.

19. Abrake head adapted' to bear on and against the back of a brake shoe, in combinatie-n with a key attached permanently to said head, said key extending nearly the entire length'of Said head and movable longitudinally thereon, and means for preventing movement of thekey on said brake head.

- 20, The combinationwith a brake head curved in the direction of its length, of a 'key curved in its length in conformity with that of said brake head and movable thereon, said key extending nearly the entire length of said' brake head, and means for preventing movement of said key on said head. l

21. The combination with a brake head of a key permanently attached thereto, said key extending nearly the entire length of said hea'd and moving longitudinally thereon.

Signed at New York borough of Manhattan in the county of New .York and State of New York this thday of October A. D.

HARRY JONES.

Witnesses:

R. N. FLm'r, H. M. Wmm.

Copies of this patent may be obtained for ive cents each, by aressine: the .ommissioner of Patents,

Walhnlton, D. C. 

